Version 1 (modified by wade, 16 years ago) (diff) |
---|
/* Program:
- 每個 node 將自己的 id 送給下一個 node。
- History:
- 2008-06-05 BETA */
#include <mpi.h> #include <stdio.h>
int main(int argc,char *argv[]) {
int n=0, myid, numprocs, i=0; MPI_Status status; MPI_Init(&argc,&argv); MPI_Comm_size(MPI_COMM_WORLD,&numprocs); MPI_Comm_rank(MPI_COMM_WORLD,&myid); if(myid==0) {
MPI_Send(&n, 1, MPI_INT, 1, 99, MPI_COMM_WORLD);
} if(myid!=0) {
MPI_Recv(&n, 1, MPI_INT, myid-1, 99, MPI_COMM_WORLD, &status); n++;
if(myid<numprocs-1)
{
MPI_Send(&n, 1, MPI_INT, myid+1, 99, MPI_COMM_WORLD);
printf("I am node %d\nI recive number %d from %d\n", myid, n, myid-1); printf("I send number %d to %d\n\n", n, myid+1);
}
}
MPI_Finalize();
return 0;
}
Attachments (1)
- demo2-01.png (64.3 KB) - added by wade 16 years ago.
Download all attachments as: .zip